C# List.Min方法代码示例

        public void CalculateEquityCurve()
        {
            var deals = new List<MarketOrder>();

            var dealsOpen = TestDataGenerator.GetOpenPosition().Select(LinqToEntity.DecorateOrder).ToList();
            var dealsClose = TestDataGenerator.GetClosePosition().Select(LinqToEntity.DecorateOrder).ToList();

            deals.AddRange(dealsOpen);
            deals.AddRange(dealsClose);

            var transfers = TestDataGenerator.GetBalanceChange().Select(LinqToEntity.DecorateBalanceChange).ToList();
            var firstDealOpenedTime = deals.Min(d => d.TimeEnter);
            transfers.Insert(0, new BalanceChange
                {
                    AccountID = deals[0].AccountID,
                    ValueDate = firstDealOpenedTime.AddHours(-1),
                    CurrencyToDepoRate = 1,
                    ChangeType = BalanceChangeType.Deposit,
                    Amount = 500000
                });

            var dicQuote = new Dictionary<string, List<QuoteData>>();

            foreach (var smb in DalSpot.Instance.GetTickerNames())
                dicQuote.Add(smb, dailyQuoteStorage.GetQuotes(smb).Select(q => new QuoteData(q.b, q.b, q.a)).ToList());

            var quoteArc = new QuoteArchive(dicQuote);
            var res = curveCalculator.CalculateEquityCurve(deals, DepoCurrency, quoteArc, transfers);

            // сверить точку кривой доходности
            CheckEquityCurvePoint(res, transfers, dealsOpen, dealsClose, quoteArc, dicQuote, 0);
            CheckEquityCurvePoint(res, transfers, dealsOpen, dealsClose, quoteArc, dicQuote, 10);
            CheckEquityCurvePoint(res, transfers, dealsOpen, dealsClose, quoteArc, dicQuote, 40);
        }

        public void Can_get_lots_of_records_with_new_instantiation_every_time_test()
        {
            var times = new List<double>();

            for (int i = 0; i < 40; ++i)
            {
                var sw = Stopwatch.StartNew();
                var efDriver = new EFDriver();
                var rows = efDriver.GetLotsOfRecords();

                Assert.That(rows, Is.Not.Null);
                Assert.That(rows.Count(), Is.GreaterThan(0));

                sw.Stop();

                times.Add(sw.ElapsedMilliseconds);
                Console.WriteLine("took {0} ms to get {1} records",
                    sw.ElapsedMilliseconds,
                    rows.Count());
            }

            Console.WriteLine("average: {0}, min: {1}, max: {2}, std dev: {3}",
                times.Average(),
                times.Min(),
                times.Max(),
                times.StandardDeviation());
        }

        public void Can_get_lots_of_records_with_new_instantiation_every_time_test()
        {
            var times = new List<double>();

            for (int i = 0; i < 40; ++i)
            {
                var sw = Stopwatch.StartNew();
                var dapperDriver = new DapperDriver();
                var rows = dapperDriver.GetLotsOfRecords<TransactionHistory>();

                Assert.That(rows, Is.Not.Null);
                Assert.That(rows.Count(), Is.GreaterThan(0));

                sw.Stop();

                times.Add(sw.ElapsedMilliseconds);
                Console.WriteLine("took {0} ms to get {1} records",
                    sw.ElapsedMilliseconds,
                    rows.Count());
            }

            Console.WriteLine("average: {0}, min: {1}, max: {2}",
                times.Average(),
                times.Min(),
                times.Max());

            var timesSansMinAndMax = new List<double>();
            timesSansMinAndMax.AddRange(times);
            timesSansMinAndMax.Remove(timesSansMinAndMax.Min());
            timesSansMinAndMax.Remove(timesSansMinAndMax.Max());
            Console.WriteLine("average sans min & max: {0}",
                timesSansMinAndMax.Average());
        }

        public void Can_get_few_records_test()
        {
            var efDriver = new EFDriver();
            var times = new List<double>();

            for (int i = 0; i < 100; ++i)
            {
                var sw = Stopwatch.StartNew();
                var rows = efDriver.GetAFewRecords();

                Assert.That(rows, Is.Not.Null);
                Assert.That(rows.Count(), Is.GreaterThan(0));

                sw.Stop();

                times.Add(sw.ElapsedMilliseconds);
                Console.WriteLine("took {0} ms to get {1} records",
                    sw.ElapsedMilliseconds,
                    rows.Count());
            }

            Console.WriteLine("average: {0}, min: {1}, max: {2}, std dev: {3}, median: {4}",
                times.Average(),
                times.Min(),
                times.Max(),
                times.StandardDeviation(),
                times.Median());

            var timesSansMinAndMax = new List<double>();
            timesSansMinAndMax.AddRange(times);
            timesSansMinAndMax.Remove(timesSansMinAndMax.Min());
            timesSansMinAndMax.Remove(timesSansMinAndMax.Max());
            Console.WriteLine("average sans min & max: {0}",
                timesSansMinAndMax.Average());
        }

        public void AggregatesTicksIntoSecondBars()
        {
            var timeProvider = new ManualTimeProvider(TimeZones.NewYork);
            var enumerator = new TradeBarBuilderEnumerator(Time.OneSecond, TimeZones.NewYork, timeProvider);

            // noon new york time
            var currentTime = new DateTime(2015, 10, 08, 12, 0, 0);
            timeProvider.SetCurrentTime(currentTime);

            // add some ticks
            var ticks = new List<Tick>
            {
                new Tick(currentTime, "SPY", 199.55m, 199, 200) {Quantity = 10},
                new Tick(currentTime, "SPY", 199.56m, 199.21m, 200.02m) {Quantity = 5},
                new Tick(currentTime, "SPY", 199.53m, 198.77m, 199.75m) {Quantity = 20},
                new Tick(currentTime, "SPY", 198.77m, 199.75m) {Quantity = 0},
                new Tick(currentTime, "SPY", 199.73m, 198.77m, 199.75m) {Quantity = 20},
                new Tick(currentTime, "SPY", 198.77m, 199.75m) {Quantity = 0},
            };

            foreach (var tick in ticks)
            {
                enumerator.ProcessData(tick);
            }

            // even though no data is here, it will still return true
            Assert.IsTrue(enumerator.MoveNext());
            Assert.IsNull(enumerator.Current);

            // advance a second
            currentTime = currentTime.AddSeconds(1);
            timeProvider.SetCurrentTime(currentTime);

            Assert.IsTrue(enumerator.MoveNext());
            Assert.IsNotNull(enumerator.Current);

            // in the spirit of not duplicating the above code 5 times (OHLCV, we'll assert these ere as well)
            var bar = (TradeBar)enumerator.Current;
            Assert.AreEqual(currentTime.AddSeconds(-1), bar.Time);
            Assert.AreEqual(currentTime, bar.EndTime);
            Assert.AreEqual("SPY", bar.Symbol.Value);
            Assert.AreEqual(ticks.First().LastPrice, bar.Open);
            Assert.AreEqual(ticks.Max(x => x.LastPrice), bar.High);
            Assert.AreEqual(ticks.Min(x => x.LastPrice), bar.Low);
            Assert.AreEqual(ticks.Last().LastPrice, bar.Close);
            Assert.AreEqual(ticks.Sum(x => x.Quantity), bar.Volume);
        }

		public void Can_GetSetCountByScores()
		{
			var scores = new List<double>();

			storeMembers.ForEach(x =>
			{ 
				Redis.AddItemToSortedSet(SetId, x);
				scores.Add(RedisClient.GetLexicalScore(x));
			});

			Assert.That(Redis.GetSortedSetCount(SetId, scores.Min(), scores.Max()), Is.EqualTo(storeMembers.Count()));
			Assert.That(Redis.GetSortedSetCount(SetId, scores.Min(), scores.Min()), Is.EqualTo(1));
		}

 public static double IntersectBox(Box box, Ray ray)
 {
     Ball ball = GetExternalSphere(box);
     if (double.IsPositiveInfinity(IntersectBall(ball, ray)))
         return double.PositiveInfinity;
     else
     {
         var points = new List<Point3D>();
         var vertex = GetVertex(box);
         int[][] order = new int[12][];
         order[0] = new[] {0, 2, 1};
         order[1] = new[] {1, 2, 4};
         order[2] = new[] {0, 5, 2};
         order[3] = new[] {0, 3, 5};
         order[4] = new[] {0, 3, 1};
         order[5] = new[] {1, 3, 6};
         order[6] = new[] {3, 5, 6};
         order[7] = new[] {6, 5, 7};
         order[8] = new[] {1, 6, 7};
         order[9] = new[] {1, 7, 4};
         order[10] = new[] {2, 5, 7};
         order[11] = new[] {2, 7, 4};
         for (int i = 0; i < 12; i++)
         {
             Point3D? point = TriangleIntersection.IntersectTriangle(vertex[order[i][0]], vertex[order[i][1]],
                                                                     vertex[order[i][2]], ray);
             if (point != null)
                 points.Add(point.Value);
             else 
             {
                 point = TriangleIntersection.IntersectTriangle(vertex[order[i][0]], vertex[order[i][2]],
                                                                     vertex[order[i][1]], ray);
                 if (point != null)
                     points.Add(point.Value);
             }
         }
         if (points.Capacity == 0)
         {
             return double.PositiveInfinity;
         }
         return points.Min(a => ray.Origin.Hypot(a));
     }
 }

		public void BenchSingleAdd()
		{
			Database.RegisterDataObject(typeof(TestTable));
			Database.RegisterDataObject(typeof(TestTableRelations));
			Database.RegisterDataObject(typeof(TestTableRelationsEntries));

			Database.DeleteObject(Database.SelectAllObjects<TestTable>());
			Database.DeleteObject(Database.SelectAllObjects<TestTableRelations>());
			Database.DeleteObject(Database.SelectAllObjects<TestTableRelationsEntries>());
			
			Assert.IsEmpty(Database.SelectAllObjects<TestTable>(), "Database shouldn't have any record For TestTable.");
			Assert.IsEmpty(Database.SelectAllObjects<TestTableRelations>(), "Database shouldn't have any record For TestTable.");
			Assert.IsEmpty(Database.SelectAllObjects<TestTableRelationsEntries>(), "Database shouldn't have any record For TestTable.");
			
			var objs = Enumerable.Range(0, 100).Select(i => new TestTable { TestField = string.Format("Bench Single Add '{0}'", i) }).ToArray();

			var times = new List<long>();
			foreach (var obj in objs)
			{
				var stopWatch = Stopwatch.StartNew();
				Database.AddObject(obj);
				stopWatch.Stop();
				times.Add(stopWatch.ElapsedMilliseconds);
			}
						
			var relationObjs = Enumerable.Range(0, 100).Select(i => new TestTableRelations { TestField = string.Format("Bench Single Relations Add '{0}'", i) }).ToArray();
			foreach (var obj in relationObjs)
				obj.Entries = Enumerable.Range(0, 5).Select(i => new TestTableRelationsEntries { ForeignTestField = obj.ObjectId }).ToArray();
			
			var timesRelations =  new List<long>();
			foreach (var obj in relationObjs)
			{
				var stopWatch = Stopwatch.StartNew();
				Database.AddObject(obj);
				stopWatch.Stop();
				timesRelations.Add(stopWatch.ElapsedMilliseconds);
			}

			Console.WriteLine("Bench Single TestTable Add Total Elapse {3}ms, Average {0}ms, Min {1}ms, Max {2}ms", times.Average(), times.Min(), times.Max(), times.Sum());
			Console.WriteLine("Bench Single TestTableRelations Add Total Elapse {3}ms, Average {0}ms, Min {1}ms, Max {2}ms", timesRelations.Average(), timesRelations.Min(), timesRelations.Max(), timesRelations.Sum());
		}

        public void ListExtensions_Min_ThrowsExceptionIfListIsEmpty()
        {
            var list = new List<Int32>();

            Assert.That(() => list.Min(),
                Throws.TypeOf<InvalidOperationException>());
        }

        public void ListExtensions_Min_ReturnsMinValue()
        {
            var list = new List<Int32>() { 4, 5, 6, 99, 10, 1, 12, 45 };

            var result = list.Min();

            TheResultingValue(result).ShouldBe(1);
        }

        public void maximum_inflight_is_respected(int limit)
        {
            var counts = new List<int>();
            long completed = 0;
            var _lock = new object();

            // ReSharper disable AccessToModifiedClosure
            _subject.AddConsumer(s => {
                Thread.Sleep(15);
                lock (_lock) { counts.Add(_subject.CurrentInflight()); }
                Interlocked.Increment(ref completed);
                Thread.Sleep(15);
            });
            // ReSharper restore AccessToModifiedClosure

            _subject.SetMaximumInflight(limit);
            _subject.Start();

            const int runs = 100;
            for (int i = 0; i < runs; i++) { _subject.AddWork(""); }

            while (Interlocked.Read(ref completed) < runs)
            {
                Thread.Sleep(500);
            }
            _subject.Stop();

            Assert.That(counts.Count(), Is.GreaterThan(0), "No actions ran");
            Assert.That(counts.Min(), Is.GreaterThan(0), "Inflight count is invalid");
            Assert.That(counts.Max(), Is.LessThanOrEqualTo(limit), "More workers run in parallel than limit");
        }